A grand jury will consider the case of a Kansas doctor charged with illegally distributing controlled substances including painkillers and antidepressants to police, Fort Riley soldiers and their families.

Authorities said Michael P. Schuster, of Manhattan, prescribed drugs at his clinic, about 15 miles from Fort Riley, based on minimal examinations, and that led to several overdoses.

The 53-year-old Schuster waived his preliminary hearing Tuesday in U.S. District Court in Topeka.

The case is scheduled to go to a grand jury Wednesday. Magistrate Judge Gary Sebelius set Schuster's detention hearing for May 7 in Topeka.